Lua APA (7ú heag.)

Sigua, R. G. (2000). The state of road safety in the Philippines. Public Policy.

Lua i Stíl Chicago (17ú heag.)

Sigua, Ricardo G. "The State of Road Safety in the Philippines." Public Policy 2000.

Lua MLA (9ú heag.)

Sigua, Ricardo G. "The State of Road Safety in the Philippines." Public Policy, 2000.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.